While a serviceable fly rod costs somewhere between $100 and $1000, one that "feels good" is priceless. Irrespective of price, a rod which doesn't "feel good" won't be used. But, if it does "feel good," power, action, taper, and modulus be damned, you'll fish that rod. Forget all that advertising hype. A rod "feels good" for only one reason. That is, when fitted with the line you choose to use at the distance you wish to cast, the frequency of your outfit matches the frequency of your casting stroke. Only you can make that call. It is purely subjective, in spite of all the efforts of any rod designer.

Previously, a dissatisfied angler had to buy a different rod or a different line for his present rod in order to get a different "feel." No More. Now, with Dr. Hanneman's Frequency Modulators, commonly known as "Feel" Fixers® you can alter the feel of your fishing outfit virtually at will.

Based on his research on characterizing fly rodsand his development of the Common Cents System (www.common-cents.info.), Dr. Hanneman has developed ''Fly Fishing's Fundamental Formula". It is expressed by the equation A= 4 ∆, where A =the adjustment required by an angler to adjust the "feel" of his present fishing outfit to the feel he finds desirable. ∆ = ERN - ELN and 4 is the frequency change in cpm per unit ∆ change.

All you really need to know is that if your rod feels too stiff, attaching a ∆ 1 ''Feel'' Fixer® to the tip of that rod will have the same effect as buying a new AFTMA Line one number higher. Without affecting your rod's action or power, the "Feel" Fixer® will reduce the frequency (CCF) of your fishing outfit by about 4 cpm and you can FIX its FEEL.